HOLE-SHAPE MEASURING APPARATUS AND HOLE-SHAPE MEASURING METHOD

Description

Technical Field

[0001] The present invention relates to a hole-shape measuring apparatus and a hole-shape measuring method.

Background Art

[0002] A flush bolt is used sometimes when fastening a member. In a case of using the flush bolt, a hole corresponding to the flush bolt (hereinafter, referred to as a flush bolt hole) is provided in the member to be fastened. The flush bolt is inserted into the flush bolt hole, whereby the member is fastened. Fig. 1 is a cross-sectional view showing an example of a flush bolt hole 6. In Fig. 1, the flush bolt hole 6 provided in a target member 3 is shown. The target member 3 has a first member 1 and a second member 2, and the first member 1 and the second member 2 are laminated. The first member 1 is a composite material. The second member 2 is a composite material or a metal material (Ti, Al, and the like). The flush bolt hole 6 extends toward a back surface 5 of the target member 3 from a principal surface 4 of the target member and has a countersunk head portion 7 and a constant portion 8. The countersunk head portion 7 is connected to an opening provided in the principal surface 4 and configured such that a diameter decreases as it becomes deeper. The constant portion 8 connects a bottom portion of the countersunk head portion 7 and an opening provided in a back surface 5. The diameter of the constant portion 8 is constant in a depth direction. A flush bolt (not shown) is inserted into the flush bolt hole 6, whereby the first member 1 and the second member 2 are fastened to each other.

[0003] The flush bolt hole 6 is formed by a drill or the like. In order to properly fasten the members, it is important that the shape of the flush bolt hole 6 is accurately formed with the desired shape. For this reason, after the formation of the flush bolt hole 6, the shape of the flush bolt hole 6 is measured. Specifically, the countersunk head depth and the hole diameter of the flush bolt hole 6 are measured. The countersunk head depth is a depth h of a portion in which a diameter becomes the reference diameter determined in advance in the countersunk head portion 7, and the hole diameter is a diameter in the constant portion 8.

[0004] Fig. 2A is a cross-sectional view showing a method of measuring the countersunk head depth. As shown in Fig. 2A, at the time of the measurement of the countersunk head depth, a step gauge 9 is used. The step gauge 9 is provided with a rod, and the countersunk head depth is measured by inserting a tip portion of the rod into the flush bolt hole 6 which is a measurement target. Further, Fig. 2B is a cross-sectional view showing a method of measuring the hole diameter. At the time of the measurement of the hole diameter, a plunger gauge 10 is used, and similar to the time of the measurement of the countersunk head depth, the hole diameter is measured by inserting the tip of a rod provided at the plunger gauge 10 into the flush bolt hole 6.

[0005] In connection with the above, a cylindrical hole shape measuring machine is disclosed in JP 4-138301A. The cylindrical hole shape measuring machine uses a pair of contacts and a pair of differential transformers which converts the amount of displacement of each contact into an electric signal.

Summary of Invention

[0006]  Incidentally, the flush bolt is used in a main wing member or the like of an aircraft. In recent years, as a material of the main wing member, instead of a metal member, a member which includes a composite material has been used. In a case where the member which includes a composite material is used as the main wing member, a greater number of flush bolts are used compared to a case the metal member is used, when fastening a plurality of members. That is, a great number of holes for flush bolts 6 are provided in a target member. Since a great number of holes for flush bolts 6 are provided, it is required to measure the shape of the flush bolt hole 6 in a short time. However, in the methods shown in Figs. 2A and 2B, it is necessary to measure the hole diameters with respect to the entire area in a thickness direction and in directions of 0° and 90° by the plunger gauge 10 after the countersunk head depth is measured by the step gauge 9, and thus it is difficult to measure the shape of the flush bolt hole 6 in a short time.

[0007] In addition, in JP 4-138301A, although the cylindrical hole shape measuring machine is disclosed, a method of measuring the shape of a flush bolt hole is not described.

[0008] US4753555 and us2007/051003 disclose devices and methods for measuring an inner diameter of a hole. US3116560, US5189808 and US2003/217479 disclose devices and methods for measuring the head depth of a countersink hole.

[0009]  A hole-shape measuring apparatus and a hole-shape measuring method according to the present invention include the features of claim 1 or 10, respectively. The hole-shape measuring apparatus is for measuring the shape of a flush bolt hole provided in a target member which includes a composite material. The flush bolt hole has a countersunk head portion which is connected to an opening provided in a principal surface of the target member and has a shape in which a diameter decreases as a depth from the principal surface increases, and a constant portion which is connected, at one end, to a bottom portion of the countersunk head portion and connected, at the other end, to an opening provided in a back surface of the target member and has a constant diameter. The hole-shape measuring apparatus includes a hole diameter measuring mechanism which measures the diameter of the constant portion, and a countersunk head depth measuring mechanism which measures a depth of the countersunk head portion where the diameter becomes the reference diameter determined in advance, as a countersunk head depth. The hole diameter measuring mechanism has a hole diameter measuring rod configured so as to be inserted into the constant portion at a tip portion and displaced according to the diameter of the constant portion, and a hole diameter measuring sensor which measures the amount of displacement of the hole diameter measuring rod. The countersunk head depth measuring mechanism has a countersunk head depth measuring rod configured so as to be inserted into the countersunk head portion at a tip portion and displaced according to the countersunk head depth, and a countersunk head depth measuring sensor which measures the amount of displacement of the countersunk head depth measuring rod. The hole diameter measuring rod and the countersunk head depth measuring rod are provided so as to become coaxial.

[0010] A hole-shape measuring method according to the present invention is a hole-shape measuring method of measuring the shape of a flush bolt hole provided in a target member which includes a composite material. The flush bolt hole has a countersunk head portion which is connected to an opening provided in a principal surface of the target member and has a shape in which a diameter decreases as a depth from the principal surface increases, and a constant portion which is connected, at one end, to a bottom portion of the countersunk head portion and connected, at the other end, to an opening provided in a back surface of the target member and has a constant diameter. The hole-shape measuring method includes a step of measuring the diameter of the constant portion by inserting a tip of a hole diameter measuring rod into the constant portion, and a step of measuring a countersunk head depth of the countersunk head portion by inserting a tip of a countersunk head depth measuring rod provided so as to become coaxial with the hole diameter measuring rod into the countersunk head portion.

[0011] According to the present invention, a hole-shape measuring apparatus and a hole-shape measuring method are provided in which it is possible to measure the shape of a flush bolt hole in a short time.

Brief Description of Drawings

[0012] 

Fig. 1 is a cross-sectional view showing an example of a flush bolt hole.

Fig. 2A is a cross-sectional view showing a method of measuring a countersunk head depth.

Fig. 2B is a cross-sectional view showing a method of measuring a hole diameter.

Fig. 3 is a cross-sectional view showing a hole-shape measuring apparatus according to an embodiment.

Fig. 4A is a cross-sectional view showing a measuring mechanism.

Fig. 4B is a cross-sectional view showing a state where a measuring head is mounted on a measuring head holding mechanism.

Fig. 5 is a cross-sectional view showing the measuring head.

Fig. 6 is a cross-sectional view showing a hole diameter measuring gauge.

Fig. 7 is a cross-sectional view showing the measuring head.

Fig. 8 is a flowchart showing a hole-shape measuring method.

Fig. 9 is a cross-sectional view showing a state where the measuring head is inserted into an opening.

Fig. 10A is a cross-sectional view showing the hole-shape measuring method.

Fig. 10B is a cross-sectional view showing the hole-shape measuring method.

Fig. 10C is a cross-sectional view showing the hole-shape measuring method.

Fig. 10D is a cross-sectional view showing the hole-shape measuring method.

Fig. 10E is a cross-sectional view showing the hole-shape measuring method.

Fig. 10F is a cross-sectional view showing the hole-shape measuring method.

Fig. 10G is a cross-sectional view showing the hole-shape measuring method.

Fig. 10H is a cross-sectional view showing the hole-shape measuring method.

Fig. 10I is a cross-sectional view showing the hole-shape measuring method.

Fig. 11 is a cross-sectional view showing a master gauge.

Fig. 12 is a top view of the master gauge.

Fig. 13 is a cross-sectional view showing a modified example of a countersunk head depth measuring tip in the embodiment.

Description of Embodiments

[0013] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0014] Fig. 3 is a cross-sectional view showing a hole-shape measuring apparatus according to this embodiment. As shown in Fig. 3, the hole-shape measuring apparatus is used to measure the shape of a flush bolt hole 6 provided in a target member 3. Similar to the example shown in Fig. 1, the target member 3 has a first member 1 and a second member 2. For example, the first member 1 is a composite material, and the second member 2 is a composite material or a metal material (Ti or Al). In addition, the flush bolt hole 6 has a countersunk head portion 7 and a constant portion 8, similar to the example shown in Fig. 1. Further, the target member 3 is set to be a main wing member of an aircraft, which includes a composite material.

[0015] The hole-shape measuring apparatus is provided with a main body section 11, a measuring mechanism 12, a balance air cylinder 13, and a pressure foot 19.

[0016] The main body section 11 is a section which holds the measuring mechanism 12 and the pressure foot 19. The main body section 11 has a Z-axis slide unit 16, a Z-axis servomotor 15, a Z-axis position detection sensor 17, and an arm 18. The arm 18 is a section which holds the measuring mechanism 12 and is held by the Z-axis slide unit 16 so as to be able to move along a Z-axis direction (a first direction). The Z-axis servomotor 15 is a motor which moves the arm 18 along the first direction. The Z-axis position detection sensor 17 has a function to detect the position on a Z-axis of the arm 18. In addition, the main body section 11 is disposed over the target member 3 such that the first direction is a direction perpendicular to a principal surface 4.

[0017] The pressure foot 19 is provided in order to make the principal surface 4 of the target member 3 flat. The pressure foot 19 is supported on the main body section 11 and configured so as to hold down the principal surface 4. There is a case where the principal surface 4 of the target member 3 is curved. In a case where the principal surface 4 is curved, there is a case where it is difficult to accurately measure a hole shape. In contrast, in this embodiment, since the principal surface 4 is held down by the pressure foot 19, the principal surface 4 is made flat, and thus it becomes possible to accurately measure a hole shape. In addition, an opening 20 is provided in the pressure foot 19. The pressure foot 19 holds down the principal surface 4 such that the flush bolt hole 6 is exposed through the opening 20.

[0018] The balance air cylinder 13 is provided in order to adjust the position in the first direction of the measuring mechanism 12. A balance adjustment pressure reducing valve 14 is provided at the balance air cylinder 13. The balance air cylinder 13 is controlled by the balance adjustment pressure reducing valve 14, and thus the position of the measuring mechanism 12 is adjusted. Deflection sometimes occurs between the measuring mechanism 12 and the main body section 11 due to the weight of the measuring mechanism 12. In the main wing member, usually, the flush bolt hole 6 is provided in each of the upper surface and the lower surface. Therefore, the hole-shape measuring apparatus is sometimes disposed on each of the upper surface and the lower surface of the main wing member. In a case where the hole-shape measuring apparatus is disposed on the upper surface of the main wing member, deflection sometimes occurs such that the measuring mechanism 12 approaches the main wing member (the target member 3). On the other hand, in a case where the hole-shape measuring apparatus is disposed on the lower surface of the main wing member, deflection sometimes occurs such that the measuring mechanism 12 becomes more distant from the main wing member (the target member 3). By providing the balance air cylinder 13, it is possible to cancel the deflection, and thus it becomes possible to match the position in the first direction of the measuring mechanism 12 to a desired position.

[0019] Subsequently, the measuring mechanism 12 will be described.

[0020] The measuring mechanism 12 has a function to measure the shape of the flush bolt hole 6. Fig. 4A is a cross-sectional view showing the measuring mechanism 12. As shown in Fig. 4A, the measuring mechanism 12 has a measuring head 21 and a measuring head holding mechanism 22. The measuring head 21 is held by the measuring head holding mechanism 22 so as to become detachable. Various types of holes for flush bolts 6 are provided in the target member 3. Therefore, a plurality of types of measuring heads 21 are used according to the shape of the flush bolt hole 6 which is a measurement target. At the time of measurement, the measuring head 21 according to the shape of the flush bolt hole 6 which is the measurement target is selected and mounted on the measuring head holding mechanism 22.

[0021] As shown in Fig. 4A, the measuring head 21 is provided with a measuring head main body 34, a countersunk head depth measuring rod 31, and a hole diameter measuring rod 32. The measuring head main body 34 has a tubular shape. The countersunk head depth measuring rod 31 and the hole diameter measuring rod 32 are disposed inside the measuring head main body 34 and supported by the measuring head main body 34. Further, the measuring head main body 34 is provided with an air flow path 33 and a measurement reference plane 35. The measurement reference plane 35 is provided at the tip of the measuring head main body 34. An opening 36 is provided in the measurement reference plane 35 and the air flow path 33 is connected to the opening 36.

[0022] On the other hand, the measuring head holding mechanism 22 is provided with a measuring head chuck confirmation sensor 29, a measuring head mounting-and-dismounting air cylinder 28, a measuring head rotation gear 25, a measuring head turning actuator 26, an air blow hose 27, an air flow path 30, a hole diameter measuring sensor 23, and a countersunk head depth measuring sensor 24. The measuring head chuck confirmation sensor 29 has a function to detect the mounting of the measuring head 21. The measuring head mounting-and-dismounting air cylinder 28 has a function to control the mounting and dismounting of the measuring head 21. The measuring head rotation gear 25 is controlled by the measuring head turning actuator 26 and has a function to rotate the measuring head 21. The air blow hose 27 is configured such that air is introduced therein, and the tip of the air blow hose 27 is connected to the air flow path 30. The air flow path 30 is provided so as to be connected to the air flow path 33 provided in the measuring head 21, in a case where the measuring head 21 is mounted. The hole diameter measuring sensor 23 is provided with a rod-shaped rod portion and has a function to measure the displacement of the rod portion. The countersunk head depth measuring sensor 24 is also provided with a rod-shaped rod portion, similar to the hole diameter measuring sensor 23, and has a function to measure the displacement of the rod portion.

[0023] Fig. 4B is a cross-sectional view showing a state where the measuring head 21 is mounted on the measuring head holding mechanism 22. As shown in Fig. 4B, the hole diameter measuring sensor 23 is disposed such that the rod portion comes into contact with the hole diameter measuring rod 32. Similarly, the countersunk head depth measuring sensor 24 is also disposed such that the rod portion comes into contact with the countersunk head depth measuring rod 31. In addition, a hole diameter measuring mechanism which continuously measures a hole diameter is realized by the hole diameter measuring sensor 23 and the hole diameter measuring rod 32. Further, a countersunk head depth measuring mechanism is realized by the countersunk head depth measuring sensor 24 and the countersunk head depth measuring rod 31.

[0024] Subsequently, the hole diameter measuring mechanism will be described. Fig. 5 is a cross-sectional view showing the measuring head 21 and is a cross-sectional view showing the hole diameter measuring mechanism. As shown in Fig. 5, a holding member 49 with an opening provided therein is fixed into the measuring head main body 34. The hole diameter measuring rod 32 is disposed so as to pass through the opening of the holding member 49 and is supported by the holding member 49. The hole diameter measuring rod 32 has an external cylinder 37 and a rod 38 disposed in the external cylinder 37. The external cylinder 37 is fixed to and supported on the holding member 49. The rod 38 is disposed in the external cylinder 37 so as to become movable.

[0025] Further, a hole diameter measuring gauge 39 is provided at a tip portion of the hole diameter measuring rod 32. Fig. 6 is a cross-sectional view showing the hole diameter measuring gauge 39. In Fig. 6, the hole diameter measuring gauge 39 inserted into the flush bolt hole 6 is shown. As shown in Fig. 6, in the hole diameter measuring gauge 39 section, the diameter of the external cylinder 37 is set so as to be a size corresponding to the size of the flush bolt hole 6 which is the measurement target. Further, a pair of leaf springs 40 and a pair of measuring terminals 41 are provided in the external cylinder 37. Tapered cones 42 extending so as to mutually face a central portion are provided at the pair of leaf springs 40. The pair of measuring terminals 41 extends in a direction orthogonal to an axial direction of the hole diameter measuring rod 32 from the leaf springs 40 so as to protrude from a pair of openings provided in the external cylinder 37. In addition, the pair of measuring terminals 41 is disposed so as to be located in the same straight line shape. Further, a tip portion of the rod 38 has a shape in which a diameter gradually decreases. Then, the tapered cones 42 are in contact with the tip portion of the rod 38.

[0026] According to the configuration described above, if the tip portion (the hole diameter measuring gauge 39) of the hole diameter measuring rod 32 is inserted into the flush bolt hole 6, the pair of measuring terminals 41 is pushed inward according to a hole diameter. As a result, the rod 38 is pressed by the pair of tapered cones 42, and thus the rod 38 is displaced along the first direction from the reference position (a position before the insertion). In a case where the hole diameter is large, the amount at which the pair of measuring terminals 41 is pushed in becomes small, and thus the amount of displacement of the rod 38 also becomes small. On the other hand, in a case where the hole diameter is small, the amount at which the pair of measuring terminals 41 is pushed in becomes large, and thus the amount of displacement of the rod 38 also becomes large. The amount of displacement of the rod 38 is measured by the hole diameter measuring sensor 23, and the hole diameter of the flush bolt hole 6 is calculated based on the amount of displacement of the rod 38.

[0027] Next, the countersunk head depth measuring mechanism will be described. Fig. 7 is a cross-sectional view showing the measuring head 21 and shows the configuration of the countersunk head depth measuring rod 31. Fig. 7(a) shows a free state and Fig. 7(b) shows a state at the time of countersunk head depth measurement. As shown in Fig. 7, the countersunk head depth measuring rod 31 has a tubular shape and is supported on the holding member 49 through a spring 44 (an elastic body). In the free state, the tip of the countersunk head depth measuring rod 31 protrudes from the measuring head main body 34. A countersunk head depth measuring tip 43 is provided at the tip of the countersunk head depth measuring rod 31. The diameter of the countersunk head depth measuring tip 43 is the reference diameter. Here, as shown in Fig. 7(b), at the time of measurement, the countersunk head depth measuring tip 43 is inserted into the flush bolt hole 6. Since the countersunk head depth measuring tip 43 has the reference diameter, the countersunk head depth measuring tip 43 comes into contact with a portion in which a diameter in the countersunk head portion 7 becomes the reference diameter. Thereafter, the measuring head main body 34 is moved to the principal surface 4 side until the measurement reference plane 35 comes into contact with the principal surface 4. At this time, since the countersunk head depth measuring rod 31 is supported on the measuring head main body 34 through the spring 44, the countersunk head depth measuring rod 31 is displaced along the first direction relative to the measuring head main body 34. This amount of displacement corresponds to the distance between the measurement reference plane 35 and the countersunk head depth measuring tip 43, that is, a countersunk head depth. Therefore, the countersunk head depth can be measured by measuring the amount of displacement of the countersunk head depth measuring rod 31 by the countersunk head depth measuring sensor 24.

[0028] Subsequently, a hole-shape measuring method according to this embodiment will be described. Fig. 8 is a flowchart showing the hole-shape measuring method.

Step S1; Pressurization of Pressure Foot

[0029] First, as shown in Fig. 3, the pressure foot 19 is disposed on the principal surface 4. Next, the pressure foot 19 is pressurized, and thus the pressure foot 19 is pressed against the principal surface 4. In this way, even in a case where the principal surface 4 is curved, it is possible to stabilize the original position of the measuring mechanism and the relative position of the principal surface 4.

Step S2; Drilling

[0030] Next, the target member 3 is processed through the opening 20 by using a drill (not shown), and thus the flush bolt hole 6 is formed. Thereafter, a drill unit axis and a measuring axis are shifted such that the measuring axis is located on the center of the pressure foot 19.

Step S3; Measuring Head Advance and Hole Diameter Measurement

[0031] Next, the measuring head 21 is inserted into the opening 20. Fig. 9 is a cross-sectional view showing a state in a case where the measuring head 21 is inserted into the opening 20. As shown in Fig. 9, the measuring mechanism 12 is moved by the Z-axis servomotor 15 such that the tip portion of the measuring head 21 is inserted into the opening 20.

[0032] Figs. 10A to 10I are cross-sectional views showing the hole-shape measuring method. As shown in Fig. 10A, the measuring head main body 34 is disposed just above the flush bolt hole 6, and as shown in Fig. 10B, the hole diameter measuring gauge 39 is inserted into the flush bolt hole 6. Then, as shown in Figs. 10B and 10C, the hole diameter measuring gauge 39 is moved such that the pair of measuring terminals 41 protrudes from the principal surface 4 side to the back surface 5 side through the constant portion 8. During the movement, a hole diameter of the constant portion 8 is continuously measured by the hole diameter measuring sensor 23 (refer to Fig. 5). The value obtained by the measurement is correlated with a position in the first direction measured by the Z-axis position detection sensor 17 and is notified to a control device (a computer) (not shown). In this way, the diameter of the constant portion 8 in a second direction is calculated for each depth.

Step S4; Countersunk Head Depth Measurement

[0033] Subsequently, as shown in Fig. 10D, the measuring head main body 34 is moved to the target member 3 side such that the countersunk head depth measuring tip 43 comes into contact with the countersunk head portion 7. In addition, the measuring head main body 34 is moved to the target member 3 side such that the measurement reference plane 35 comes into contact with the principal surface 4, and a countersunk head depth is measured by the countersunk head depth measuring sensor 24 (refer to Fig. 7). Further, when the measurement reference plane 35 comes into contact with the principal surface 4, air is injected from the opening 36 (refer to Fig. 4A). In this way, even in a case where foreign matter or the like is present on the principal surface 4, it is possible to remove the foreign matter or the like, and thus it is possible to reliably bring the measurement reference plane 35 into contact with the principal surface 4.

Step S5; Retreat

[0034] Subsequently, as shown in Fig. 10E, the measuring head main body 34 is retreated such that the countersunk head depth measuring tip 43 is separated from the countersunk head portion 7. For example, the measuring head main body 34 is retreated by about 1 mm.

Step S6; Rotation

[0035] Subsequently, as shown in Fig. 10F, the measuring head main body 34 is rotated by 90° by the measuring head turning actuator 26 (refer to Fig. 4A).

Step S7; Measuring Head Retreat and Hole Diameter Measurement

[0036] Subsequently, as shown in Figs. 10G and 10H, the measuring head main body 34 is retreated by the Z-axis servomotor 15 (refer to Fig. 3). During the retreat, a hole diameter in a third direction orthogonal to the second direction is continuously measured by the hole diameter measuring sensor 23 (refer to Fig. 5). The hole diameter that is a measured result is correlated with the position in the first direction measured by the Z-axis position detection sensor 17 (refer to Fig. 3) and is notified to the control device (not shown).

Step S8; Rotation

[0037] Subsequently, as shown in Fig. 10I, the measuring head main body 34 is rotated by the measuring head turning actuator 26 (refer to Fig. 4A) and returned to the origin position.

Step S9; Is Measured Value Within Allowable Range?

[0038] The countersunk head depth of the flush bolt hole 6 is measured by the processing described above. Further, a hole diameter in the second direction and a hole diameter in the third direction are measured at each depth. Whether or not the obtained measured values are within allowable ranges determined in advance is determined by the control device (not shown).

Step S10; Pressure Foot Pressurization Release

[0039] In a case where the measured values are within the allowable ranges in Step S9, the pressurization of the pressure foot is released and the processing is ended.

Step S11; Measuring Apparatus Cause Investigation and Treatment

[0040] On the other hand, in a case where the measured values are out of the allowable ranges in Step S9, the apparatus is stopped and cause investigation and treatment are performed.

[0041] As described above, according to this embodiment, since the countersunk head depth measuring rod 31 and the hole diameter measuring rod 32 are provided so as to become coaxial, it is possible to immediately perform the measurement of the countersunk head depth after the hole diameter measurement. That is, it is possible to measure the shape of the flush bolt hole 6 in a short time.

[0042] Further, according to this embodiment, since the balance air cylinder 13 (refer to Fig. 3) is provided, even in a case where deflection occurs between the measuring mechanism 12 and the main body section 11 due to the weight of the measuring mechanism 12, it is possible to cancel the deflection. In this way, it is possible to accurately measure the shape of the flush bolt hole 6.

[0043] In addition, according to this embodiment, an air blow mechanism (refer to Fig. 4A, the air blow hose 27, the air flow path 30, and the air flow path 33) is provided and air is injected from the opening 36 provided in the measurement reference plane 35. Foreign matter sometimes exists around the flush bolt hole 6 due to chips or the like at the time of processing. Such foreign matter is blown off by air which is injected from the opening 36, and thus the foreign matter is prevented from being caught between the measurement reference plane 35 and the principal surface 4. In this way, it becomes possible to reliably bring the measurement reference plane 35 into contact with the principal surface 4, and thus it becomes possible to accurately measure a countersunk head depth.

[0044] Further, according to this embodiment, a plurality of measuring heads 21 is prepared and the measuring head 21 is selected according to the flush bolt hole 6 that is the measurement target, and is detachably mounted on the measuring head holding mechanism 22. Therefore, even in a case where a plurality of types of holes for flush bolts 6 exists, it becomes possible to measure a shape in a short time.

[0045] Further, according to this embodiment, as shown in Figs. 10A to 10I, a hole diameter in the second direction is measured during the advance of the measuring head main body 34. A countersunk head depth is measured after the advance of the measuring head main body 34. The measuring head main body 34 is rotated after the countersunk head depth measurement. Thereafter, the measuring head main body 34 is retreated at the same time as the measurement of the hole diameter and a hole diameter in the third direction is measured. Therefore, by reciprocating the measuring head main body 34 only once, it is possible to measure the hole diameter in the second direction for each depth, the hole diameter in the third direction for each depth, and the countersunk head depth.

[0046] Incidentally, the hole-shape measuring apparatus according to this embodiment is assembled before measurement and corrected after the assembling. At the time of the correction, a master gauge is used. Fig. 11 is a cross-sectional view showing a master gauge 45 and Fig. 12 is a top view of the master gauge 45. As shown in Figs. 11 and 12, a reference hole 46 and a mounting hole 50 are provided in the master gauge 45. The reference hole 46 has a known countersunk head depth a and a known hole diameter b. By inserting the hole diameter measuring gauge 39 and the countersunk head depth measuring tip 43 into the reference hole 46 of the master gauge 45 and measuring a countersunk head depth and a hole diameter, it is possible to perform the correction of the hole-shape measuring apparatus. Since the reference hole 46 having the known countersunk head depth a and the known hole diameter b is provided in the master gauge 45, it becomes possible to perform the correction by single measurement.

[0047] Further, in this embodiment, it is possible to further devise the shape of the countersunk head depth measuring tip 43. Fig. 13 is a cross-sectional view showing a modified example of the countersunk head depth measuring tip 43 in this embodiment. In the modified example shown in Fig. 13, the countersunk head depth measuring tip 43 has a reference diameter portion 48 having the reference diameter and a tapered portion 47. The tapered portion 47 is provided at the tip of the reference diameter portion 48 and is a portion in which a diameter decreases as it goes toward the tip. The tapered portion 47 is configured such that when viewed in a cross section, an angle P made by the tapered portion 47 and the principal surface 4 is smaller than an angle α that the wall surface of the countersunk head portion 7 makes with the principal surface 4. Such a configuration is adopted, whereby at the time of the countersunk head depth measurement, the countersunk head depth measuring tip 43 reliably comes into contact with the wall surface of the countersunk head portion 7 at a connection portion between the reference diameter portion 48 and the tapered portion 47. In a case where a configuration is made such that the inclination of the tapered portion 47 is the same as the inclination of the wall surface of the countersunk head portion 7, the position of a portion which comes into contact with the wall surface of the countersunk head portion 7 in the countersunk head depth measuring tip 43 is not stable, and thus there is a case where it is not possible to accurately measure a countersunk head depth. In contrast, according to this modified example, since the countersunk head depth measuring tip 43 reliably comes into contact with the wall surface of the countersunk head portion 7 at the connection portion between the reference diameter portion 48 and the tapered portion 47, it is possible to accurately measure a countersunk head depth.

Claims

1. A hole-shape measuring apparatus for measuring a shape of a flush bolt hole (6) provided in a target member (3) which includes a composite material,
wherein the flush bolt hole (6) has:

a countersunk head portion (7) which is connected to an opening provided in a principal surface (4) of the target member (3) and has a shape in which a diameter decreases as a depth from the principal surface (4) increases, and

a constant portion (8) which is connected, at one end, to a bottom portion of the countersunk head portion (7) and is connected, at the other end, to an opening provided in a back surface (5) of the target member (3) and has a constant diameter,

wherein the hole-shape measuring apparatus comprises:

a hole diameter measuring mechanism (23,32) which is arranged to measure a diameter of the constant portion (8); and

a countersunk head depth measuring mechanism (24,31) which is arranged to measure a depth at a position of the countersunk head portion (7) where its diameter is equal to a reference diameter, as a countersunk head depth,

wherein the hole diameter measuring mechanism (23,32) comprises:

a hole diameter measuring rod (32) configured so that a hole diameter measuring gauge (39) provided at a tip portion thereof can be inserted into the constant portion (8) at a tip portion, wherein the hole diameter measuring gauge (39) comprises a pair of measuring terminals (41) arranged so as to be pushed inward when the measuring rod (32) is inserted into the constant portion (8) and to displace or a rod (38) arranged to be displaced in a first direction perpendicular to the principal surface of the target member as a result according to the diameter of the constant portion (8), and

a hole diameter measuring sensor (23) arranged to measure the amount of displacement of the rod (38),

wherein the countersunk head depth measuring mechanism (24,31) comprises:

a countersunk head depth measuring rod (31) configured so that a tip portion thereof (43) has a diameter which is the reference diameter and can be inserted into the countersunk head portion (7) and displaced according to the countersunk head depth, and

a countersunk head depth measuring sensor (24) arranged to measure an amount of the displacement of the countersunk head depth measuring rod (31), and

wherein the hole diameter measuring rod (32) and the countersunk head depth measuring rod (31) are provided so as to be coaxial.

2. The hole-shape measuring apparatus according to Claim 1, wherein the countersunk head depth measuring rod (31) has a tubular shape, and
the hole diameter measuring rod (32) is inserted into the countersunk head depth measuring rod (31) so as to protrude from a tip of the countersunk head depth measuring rod (31).

3. The hole-shape measuring apparatus according to Claim 1 or 2, further comprising:

a measuring head holding mechanism (22); and

a measuring head (21) which is detachably held by the measuring head holding mechanism (22),

wherein the hole diameter measuring rod (32) and the countersunk head depth measuring rod (31) are mounted on the measuring head (22),

wherein the hole diameter measuring sensor (23) and the countersunk head depth measuring sensor (24) are mounted on the measuring head holding mechanism (22),

wherein the hole diameter measuring rod (32) and the hole diameter measuring sensor (23) are provided so as to be connected to each other when the measuring head (21) is mounted on the measuring head holding mechanism (22), and

wherein the countersunk head depth measuring rod (31) and the countersunk head depth measuring sensor (24) are provided so as to be connected to each other when the measuring head (21) is mounted on the measuring head holding mechanism (22).

4. The hole-shape measuring apparatus according to Claim 3, wherein the measuring head (21) is provided with a measurement reference plane (35) which is arranged to come into contact with the principal surface (4) of the target member (3) at the measurement of the countersunk head depth,
wherein a countersunk head depth measuring tip (43) is provided at a tip of the countersunk head depth measuring rod (31),
wherein the countersunk head depth measuring tip (43) is provided with a reference diameter portion (48) which has the reference diameter and is arranged to come into contact with a wall surface of the countersunk head portion (7), and
wherein the countersunk head depth measuring rod (31) is supported on the measuring head (21) through an elastic member such that the countersunk head depth measuring tip (43) protrudes from the measurement reference plane (35).

5. The hole-shape measuring apparatus according to Claim 4, wherein a tapered portion (47) in which a diameter decreases toward a tip side from the reference diameter portion (48) is further formed at the countersunk head depth measuring tip (43), and
an angle (β) between the tapered portion (47) and the principal surface (4) is set to be smaller than an angle (α) between the wall surface of the countersunk head portion (7) and the principal surface (4) such that the countersunk head depth measuring tip (43) can come into contact with the wall surface of the countersunk head portion (7) at only the reference diameter portion (48).

6. The hole-shape measuring apparatus according to Claim 4 or 5, further comprising:

an air blow mechanism (27,30,33),

wherein an opening (36) for air injection is provided in the measurement reference plane (35), and

the air blow mechanism (27,30,33) is configured so as to inject air through the opening (36) for air injection.

7. The hole-shape measuring apparatus according to any one of Claims 2 to 6, further comprising:

a main body mechanism (11) which supports the measuring head holding mechanism (23) so as to be able to move in a first direction perpendicular to the principal surface (4) of the target member (3); and

a Z-axis position detection sensor (17) for detecting a position of the measuring head holding mechanism (22) with respect to the main body mechanism (11) in the first direction.

8. The hole-shape measuring apparatus according to Claim 7, further comprising:

a balance air cylinder (13) which is arranged to adjust the position of the measuring head holding mechanism (22) with respect to the main body mechanism (11).

9. The hole-shape measuring apparatus according to any one of Claims 1 to 8, further comprising:

a pressure foot (19) which is arranged to hold down the principal surface (4) of the target member (3) such that the principal surface (4) of the target member (3) becomes a flat surface; and

wherein an opening (20) for measurement is provided in the pressure foot (19), and

the hole diameter measuring rod (32) and the countersunk head depth measuring rod (31) are arranged to be inserted into the flush bolt hole (6) through the opening (20) for measurement.

10. A hole-shape measuring method of measuring a shape of a flush bolt hole (6) provided in a target member (3) which includes a composite material,
wherein the flush bolt hole (6) has
a countersunk head portion (7) which is connected to an opening provided in a principal surface (4) of the target member (3) and has a shape in which a diameter decreases as a depth from the principal surface (4) increases, and
a constant portion (8) which is connected, at one end, to a bottom portion of the countersunk head portion (7) and is connected, at the other end, to an opening provided in a back surface (5) of the target member (3) and has a constant diameter,
wherein the hole-shape measuring method comprises:

measuring a diameter of the constant portion (8) by inserting a hole diameter measuring gauge (39) provided at a tip of a hole diameter measuring rod (32) into the constant portion (8), wherein the hole diameter measuring gauge (39) comprises a pair of measuring terminals (41) arranged so as to be pushed inward when the measuring rod (32) is inserted into the constant portion (8) and to displace a rod (38) arranged to be displaced in a first direction perpendicular to the principal surface of the target member as a result according to the diameter of the constant portion (8), and wherein the diameter of the constant portion (8) is calculated based on the amount of displacement of the rod (38); and

measuring a countersunk head depth of the countersunk head portion (7) by inserting a tip portion (43) of a countersunk head depth measuring rod (31) having a diameter which is the reference diameter, the head depth measuring rod (31) being provided so as to be coaxial with the hole diameter measuring rod (32) into the countersunk head portion (7).

11. The hole-shape measuring method according to Claim 10, wherein the hole diameter measuring rod (32) is configured so as to be displaced according to a diameter of the flush bolt hole (6) in one direction at the time of insertion into the flush bolt hole (6), and
the measuring of the diameter of the constant portion (8) includes:

inserting the tip of the hole diameter measuring rod (32) into the constant portion (8) and measuring the diameter of the constant portion (8) in a second direction, before measuring a countersunk head depth;

rotating the hole diameter measuring rod (32) after measuring the countersunk head depth; and

measuring the diameter of the constant portion (8) in a third direction by the hole diameter measuring rod (32) after rotating the hole diameter measuring rod (32).

12. The hole-shape measuring method according to Claim 11, wherein the rotating the hole diameter measuring rod (32) includes rotating the hole diameter measuring rod (32) by 90°.

13. The hole-shape measuring method according to Claim 10 or 11, further comprising:

preparing a master gauge (45) provided with a reference hole (46) having a known countersunk head depth and a known hole diameter (b) in advance before measuring the diameter of the constant portion (8); and

measuring the countersunk head depth and the hole diameter of the reference hole (46) by using the hole diameter measuring rod (32) and the countersunk head depth measuring rod (31) and performing correction on the basis of measured results, before measuring the diameter of the constant portion (8).

Ansprüche

1. Eine Lochform-Messvorrichtung zum Messen einer Form eines bündigen Bolzen- oder Schraubenlochs (6), das in einem Zielelement (3) vorgesehen ist, welches ein Verbundmaterial enthält,
wobei das bündige Bolzen- oder Schraubenloch (6) aufweist:

einen Senkkopfabschnitt (7), der mit einer Öffnung verbunden ist, die in einer Hauptfläche (4) des Zielelements (3) vorgesehen ist und eine Form besitzt, bei der ein Durchmesser mit zunehmender Tiefe von der Hauptfläche (4) abnimmt, und

einen Konstantabschnitt (8), der an einem Ende mit einem Bodenabschnitt des Senkkopfabschnitts (7) verbunden ist und der an dem anderen Ende mit einer Öffnung verbunden ist, die in einer Rückfläche (5) des Zielelements (3) vorgesehen ist, und der einen konstanten Durchmesser besitzt,

wobei die Lochform-Messvorrichtung aufweist:

einen Lochdurchmesser-Messmechanismus (23,32), der eingerichtet ist, um einen Durchmesser des Konstantabschnitts (8) zu messen, und

einen Senkkopftiefen-Messmechanismus (24,31), der eingerichtet ist, um eine Tiefe an einer Position des Senkkopfabschnitts (7) als eine Senkkopftiefe zu messen, wo dessen Durchmesser gleich einem Referenzdurchmesser ist,

wobei der Lochdurchmesser-Messmechanismus (23,32) aufweist:

einen Lochdurchmesser-Messstab (32), der so konfiguriert ist, dass eine Lochdurchmesser-Messlehre (39), die an einem Endabschnitt davon vorgesehen ist, in den Konstantabschnitt (8) an einem Endabschnitt eingesetzt werden kann, wobei die Lochdurchmesser-Messlehre (39) ein paar von Messenden (41) aufweist, die so angeordnet sind, dass sie nach Innen gedrückt werden, wenn der Messstab (32) in den Konstantabschnitt (8) eingeführt wird, und einen Stab (38) versetzen, der angeordnet ist, um als eine Folge davon gemäß dem Durchmesser des Konstantabschnitts (8) in einer ersten Richtung senkrecht zu der Hauptfläche des Zielelements versetzt zu werden, und

einen Lochdurchmesser-Messsensor (23), der eingerichtet ist, um die Versatzgröße des Stabs (38) zu messen,

wobei der Senkkopftiefen-Messmechanismus (24,31) aufweist:

einen Senkkopftiefen-Messstab (31), der so konfiguriert ist, dass ein Endabschnitt davon (43) einen Durchmesser besitzt, der der Bezugsdurchmesser ist, und der in den Senkkopfabschnitt (7) eingeführt und entsprechend der Senkkopftiefe versetzt werden kann, und

einen Senkkopftiefen-Messsensor (24), der eingerichtet ist, um eine Größe des Versatzes des Senkkopftiefen-Messstabs (31) zu messen, und

wobei der Lochdurchmesser-Messstab (32) und der Senkkopftiefen-Messstab (31) koaxial vorgesehen sind.

2. Die Lochform-Messvorrichtung gemäß Anspruch 1, wobei der Senkkopftiefen-Messstab (31) eine Rohrform besitzt, und
der Lochdurchmesser-Messstab (32) in den Senkkopftiefen-Messstab (31) so eingesetzt ist, dass er von einem Ende des Senkkopftiefen-Messstabs (31) vorsteht.

3. Die Lochform-Messvorrichtung gemäß Anspruch 1 oder 2, ferner mit:

einem Messkopf-Haltemechanismus (22), und

einem Messkopf (21), der abnehmbar durch den Messkopf-Haltemechanismus (22) gehalten ist,

wobei der Lochdurchmesser-Messstab (32) und der Senkkopftiefen-Messstab (31) an dem Messkopf (22) angebracht sind,

wobei der Lochdurchmesser-Messsensor (23) und der Senkkopftiefen-Messsensor (24) an dem Messkopf-Haltemechanismus (22) angebracht sind,

wobei der Lochdurchmesser-Messstab (32) und der Lochdurchmesser-Messsensor (23) so vorgesehen sind, dass sie miteinander verbunden sind, wenn der Messkopf (21) an dem Messkopf-Haltemechanismus (22) angebracht ist, und

wobei der Senkkopftiefen-Messstab (31) und der Senkkopftiefen-Messsensor (24) so vorgesehen sind, dass sie miteinander verbunden sind, wenn der Messkopf (21) an dem Messkopf-Haltemechanismus (22) angebracht ist.

4. Die Lochform-Messvorrichtung gemäß Anspruch 3, wobei der Messkopf (21) mit einer Mess-Bezugsebene (35) versehen ist, die angeordnet ist, um bei der Messung der Senkkopftiefe in Kontakt mit der Hauptfläche (4) des Zielelements (3) zu kommen,
wobei eine Senkkopftiefen-Messspitze (43) an einem Ende des Senkkopftiefen-Messstabs (31) vorgesehen ist,
wobei die Senkkopftiefen-Messspitze (43) mit einem Bezugsdurchmesserabschnitt (48) versehen ist, der den Bezugsdurchmesser hat und angeordnet ist, um in Kontakt mit einer Wandfläche des Senkkopfabschnitts (7) zu kommen, und
wobei der Senkkopftiefen-Messstab (31) an dem Messkopf (21) über ein elastisches Element so gelagert ist, dass die Senkkopftiefen-Messspitze (43) von der Mess-Bezugsebene (35) vorsteht.

5. Die Lochform-Messvorrichtung gemäß Anspruch 4, wobei ein abgeschrägter oder verjüngter Abschnitt (47), bei dem ein Durchmesser zu einer Endseite von dem Bezugsdurchmesserabschnitt (48) abnimmt, ferner an der Senkkopftiefen-Messspitze (43) ausgebildet ist, und
ein Winkel (β) zwischen dem verjüngten Abschnitt (47) und der Hauptfläche (4) so eingestellt ist, dass er kleiner ist als ein Winkel (α) zwischen der Wandfläche des Senkkopfabschnitts (7) und der Hauptfläche (4), sodass die Senkkopftiefen-Messspitze (43) in Kontakt mit der Wandfläche des Senkkopfabschnitts (7) an nur dem Bezugsdurchmesserabschnitt (48) kommen kann.

6. Die Lochform-Messvorrichtung gemäß Anspruch 4 oder 5, ferner mit:

einem Luftblasmechanismus (27,30,33),

wobei eine Öffnung (36) für eine Lufteinblasung in der Mess-Bezugsebene (35) vorgesehen ist, und

der Luftblasmechanismus (27,30,33) so konfiguriert ist, dass er Luft durch die Öffnung (36) für Lufteinblasung einbläst.

7. Die Lochform-Messvorrichtung gemäß einem der Ansprüche 2 bis 6, ferner mit:

einem Hauptkörpermechanismus (11), der den Messkopf-Haltemechanismus (23) so trägt, dass er sich in einer ersten Richtung senkrecht zu der Hauptfläche (4) des Zielelements (3) bewegen kann, und

einem Z-Achsen-Positionserfassungssensor (17) zum Erfassen einer Position des Messkopf-Haltemechanismus (22) bezüglich des Hauptkörpermechanismus (11) in der ersten Richtung.

8. Eine Lochform-Messvorrichtung gemäß Anspruch 7, ferner mit:

einem Ausgleichsluftzylinder (13), der eingerichtet ist, um die Position des Messkopf-Haltemechanismus (22) bezüglich dem Hauptkörpermechanismus (11) einzustellen.

9. Die Lochform-Messvorrichtung gemäß einem der Ansprüche 1 bis 8, ferner mit:

einem Druckfuß (19), der angeordnet ist, um die Hauptfläche (4) des Zielelements (3) so niederzuhalten, dass die Hauptfläche (4) des Zielelements (3) eine flache Oberfläche wird, und

wobei eine Öffnung (20) zum Messen in dem Druckfuß (19) vorgesehen ist, und

der Lochdurchmesser-Messstab (32) und der Senkkopftiefen-Messstab (31) angeordnet sind, um in das bündige Bolzen- oder Schraubenloch (6) durch die Öffnung (20) zur Messung eingeführt zu werden.

10. Ein Lochform-Messverfahren zum Messen einer Form eines bündigen Bolzen- oder Schraubenlochs (6), das in einem Zielelement (3) vorgesehen ist, welches ein Verbundmaterial enthält,
wobei das bündige Bolzen- oder Schraubenloch (6) aufweist:

einen Senkkopfabschnitt (7), der mit einer Öffnung verbunden ist, die in einer Hauptfläche (4) des Zielelements (3) vorgesehen ist und eine Form besitzt, bei der ein Durchmesser mit zunehmender Tiefe von der Hauptfläche (4) abnimmt, und

einen Konstantabschnitt (8), der an einem Ende mit einem Bodenabschnitt des Senkkopfabschnitts (7) verbunden ist und der an dem anderen Ende mit einer Öffnung verbunden ist, die in einer Rückfläche (5) des Zielelements (3) vorgesehen ist, und der einen konstanten Durchmesser besitzt,

wobei das Lochform-Messverfahren aufweist:

Messen eines Durchmessers des Konstantabschnitts (8) durch Einführen einer Lochdurchmesser-Messlehre (39), die an einem Ende eines Lochdurchmesser-Messstabs (32) vorgesehen ist, in den Konstantabschnitt (8), wobei die Lochdurchmesser-Messlehre (39) ein Paar von Messenden (41) aufweist, die so angeordnet sind, dass sie nach Innen gedrückt werden, wenn der Messstab (32) in den Konstantabschnitt (8) eingeführt wird, und einen Stab (38) versetzen, der angeordnet ist, um als ein Ergebnis entsprechend dem Durchmesser des Konstantabschnitts (8) in einer ersten Richtung senkrecht zu der Hauptfläche des Zielelements versetzt zu werden, und wobei der Durchmesser des Konstantabschnitts (8) basierend auf der Größe des Versatzes des Stabs (38) berechnet wird, und

Messen einer Senkkopftiefe des Senkkopfabschnitts (7) durch Einführen eines Endabschnitts (43) eines Senkkopftiefen-Messstabs (31) mit einem Durchmesser, der der Bezugsdurchmesser ist, wobei der Kopftiefen-Messstab (31) so vorgesehen ist, dass er koaxial mit der Lochdurchmesser-Messstab (32) ist, in den Senkkopfabschnitt (7).

11. Das Lochform-Messverfahren gemäß Anspruch 10, wobei der Lochdurchmesser-Messstab (32) so konfiguriert ist, dass er gemäß einem Durchmesser des bündigen Schrauben- oder Bolzenlochs (6) in einer Richtung versetzt wird, zu der Zeit des Einführens in das bündige Bolzen- oder Schraubenloch (6), und
wobei das Messen des Durchmessers des Konstantabschnitts (8) aufweist:

Einführen der Spitze des Lochdurchmesser-Messstabs (32) in den Konstantabschnitt (8) und Messen des Durchmessers des Konstanabschnitts (8) in einer zweiten Richtung, bevor eine Senkkopftiefe gemessen wird,

Drehen des Lochdurchmesser-Messstabs (32) nach dem Messen der Senkkopftiefe, und

Messen des Durchmessers des Konstantabschnitts (8) in einer dritten Richtung durch den Lochdurchmesser-Messstab (32) nach dem Drehen des Lochdurchmesser-Messstabs (32).

12. Das Lochform-Messverfahren gemäß Anspruch 11, wobei das Drehen des Lochdurchmesser-Messstabs (32) ein Drehen des Lochdurchmesser-Messstabs (32) um 90° umfasst.

13. Das Lochform-Messverfahren gemäß Anspruch 10 oder 11, ferner mit:

Vorbereiten einer Hauptlehre (45), die mit einem Bezugsloch (46) versehen ist, das eine bekannte Senkkopftiefe und einen bekannten Lochdurchmesser (b) besitzt, vorab vor dem Messen des Durchmessers des Konstantabschnitts (8), und

Messen der Senkkopftiefe und des Lochdurchmessers des Bezugslochs (46) durch Anwendung des Lochdurchmesser-Messstabs (32) und des Senkkopftiefen-Messstabs (31) und Ausführen einer Korrektur auf der Basis der Messergebnisse bevor der Durchmesser des Konstantabschnitts (8) gemessen wird.

Revendications

1. Dispositif de mesure de la forme d'un trou pour mesurer la forme d'un trou (6) pour un boulon noyé ménagé dans un élément (3) cible, qui comprend un matériau composite,
dans lequel le trou (6) pour un boulon noyé a :

une partie (7) de tête fraisée, qui communique avec une ouverture ménagée dans une surface (4) principale de l'élément (3) cible et qui a une forme dans laquelle un diamètre diminue au fur et à mesure qu'une profondeur à partir de la surface (4) principale augmente et

une partie (8) constante, qui communique à une extrémité avec une partie de fond de la partie (7) de tête fraisée et qui communique à l'autre extrémité avec une ouverture ménagée dans une surface (5) arrière de l'élément (3) cible et qui a un diamètre constant,

le dispositif de mesure de la forme d'un trou comprenant :

un mécanisme (23, 32) de mesure du diamètre d'un trou, qui est conçu pour mesurer un diamètre de la partie (8) constante et

un mécanisme (24, 31) de mesure de la profondeur de la tête fraisée, qui est conçu pour mesurer une profondeur en une position de la partie (7) de la tête fraisée où son diamètre est égal à un diamètre de référence en tant que profondeur de tête fraisée,

dans lequel le mécanisme (23, 32) de mesure du diamètre d'un trou comprend :

une tige (32) de mesure du diamètre d'un trou configurée de manière à ce qu'un calibre (39) de mesure du diamètre d'un trou prévu à sa partie de pointe puisse être inséré dans la partie (8) constante à une partie de pointe, le calibre (39) de mesure du diamètre d'un trou comprenant une paire de bornes (41) de mesure conçues pour être poussées vers l'intérieur lorsque la tige (32) de mesure est insérée dans la partie (8) constante et pour déplacer une tige (38) conçue pour être déplacée dans une première direction perpendiculaire à la surface principale de l'élément cible en résultat suivant le diamètre de la partie (8) constante et

un capteur (23) de mesure du diamètre d'un trou conçu pour mesurer le montant du déplacement de la tige (38),

dans lequel le mécanisme (24, 31) de mesure de la profondeur de la tête fraisée comprend :

une tige (31) de mesure de la profondeur de la tête fraisée configurée de manière à ce que sa partie (43) de pointe ait un diamètre qui est le diamètre de référence et puisse être insérée dans la partie (7) de tête fraisée et déplacée suivant la profondeur de la tête fraisée et

un capteur (24) de mesure de la profondeur de la tête fraisée conçu pour mesurer un montant du déplacement de la tige (31) de mesure de la profondeur de la tête fraisée et

dans lequel la tige (32) de mesure du diamètre d'un trou et la tige (31) de mesure de la profondeur de la tête fraisée sont prévues de manière à être coaxiales.

2. Dispositif de mesure de la forme d'un trou suivant la revendication 1, dans lequel la tige (31) de mesure de la profondeur de la tête fraisée a une forme tubulaire et
la tige (32) de mesure du diamètre d'un trou est insérée dans la tige (31) de mesure de la profondeur de la tête fraisée, de manière à faire saillie d'une pointe de la tige (31) de mesure de la profondeur de la tête fraisée.

3. Dispositif de mesure de la forme d'un trou suivant la revendication 1 ou 2, comprenant, en outre :

un mécanisme (22) de maintien d'une tête de mesure et

une tête (21) de mesure, qui est maintenue de manière amovible par le mécanisme (22) de maintien d'une tête de mesure,

la tige (32) de mesure du diamètre d'un trou et la tige (31) de mesure de la profondeur de la tête fraisée étant montées sur la tête (22) de mesure,

le capteur (23) de mesure du diamètre d'un trou et le capteur (24) de mesure de la profondeur de la tête fraisée étant montés sur le mécanisme (22) de maintien de la tête de mesure,

la tige (32) de mesure du diamètre d'un trou et le capteur (23) de mesure du diamètre d'un trou sont prévus de manière à être reliés l'un à l'autre lorsque la tête (21) de mesure est montée sur le mécanisme (22) de maintien de la tête de mesure et

la tige (31) de mesure de la profondeur de la tête fraisée et le capteur (24) de mesure de la profondeur de la tête fraisée sont prévus de manière à être reliés l'un à l'autre lorsque la tête (21) de mesure est montée sur le mécanisme (22) de maintien de la tête de mesure.

4. Dispositif de mesure de la forme d'un trou suivant la revendication 3, dans lequel la tête (21) de mesure est pourvue d'un plan (35) de référence de mesure, qui est conçu pour venir en contact avec la surface (4) principale de l'élément (3) cible lors de la mesure de la profondeur de la tête fraisée,
dans lequel une pointe (43) de mesure de la profondeur de la tête fraisée est prévue à une pointe de la tige (31) de mesure de la profondeur de la tête fraisée,
dans lequel la pointe (43) de mesure de la profondeur de la tête fraisée est pourvue d'une partie (48) de diamètre de référence, qui a le diamètre de référence et qui est conçue pour venir en contact avec une surface de paroi de la partie (7) de la tête fraisée et
dans lequel la tige (31) de mesure de la profondeur de la tête fraisée est supportée sur la tête (21) de mesure par l'intermédiaire d'un élément élastique, de manière à ce que la pointe (43) de mesure de la profondeur de la tête fraisée fasse saillie du plan (35) de référence de mesure.

5. Dispositif de mesure de la forme d'un trou suivant la revendication 4, dans lequel une partie (47) conique, dans laquelle un diamètre diminue en direction d'un côté de pointe à partir de la partie (48) de diamètre de référence, est formée, en outre, à la pointe (43) de mesure de la profondeur de la tête fraisée et
un angle (β) entre la partie (47) conique et la surface (4) principale est fixé de manière à être plus petit qu'un angle (α) entre la surface de paroi de la partie (7) de la tête fraisée et la surface (4) principale, de manière à ce que la pointe (43) de mesure de la profondeur de la tête fraisée puisse venir en contact avec la surface de paroi de la partie (7) de tête fraisée seulement à la partie (48) de diamètre de référence.

6. Dispositif de mesure de la forme d'un trou suivant la revendication 4 ou 5, comprenant, en outre :

un mécanisme (27, 30, 33) d'insufflation d'air,

dans lequel une ouverture (36) d'injection d'air est prévue dans le plan (35) de référence de mesure et

le mécanisme (27, 30, 33) d'insufflation d'air est configuré de manière à injecter de l'air dans l'ouverture (36) afin d'avoir une injection d'air.

7. Dispositif de mesure de la forme d'un trou suivant l'une quelconque des revendications 2 à 6, comprenant, en outre :

un mécanisme (11) de corps principal, qui supporte le mécanisme (23) de maintien de la tête de mesure, de manière à pouvoir se déplacer dans une première direction perpendiculaire à la surface (4) principale de l'élément (3) cible et

un capteur (17) de détection d'une position suivant l'axe Z pour détecter une position du mécanisme (22) de maintien de la tête de mesure par rapport au mécanisme (11) de corps principal dans la première direction.

8. Dispositif de mesure de la forme d'un trou suivant la revendication 7, comprenant, en outre :

un vérin (13) pneumatique d'équilibrage, qui est conçu pour régler la position du mécanisme (22) de maintien de la tête de mesure par rapport au mécanisme (11) du corps principal.

9. Dispositif de mesure de la forme d'un trou suivant l'une quelconque des revendications 1 à 8, comprenant, en outre :

un pied (19) d'application d'une pression qui est conçue pour maintenir vers le bas la surface (4) principale de l'élément (3) cible, de manière à ce que la surface (4) principale de l'élément (3) cible devienne une surface plane et

dans lequel une ouverture (20) de mesure est prévue dans le pied (19) d'application d'une pression et

la tige (32) de mesure du diamètre d'un trou et la tige (31) de mesure de la profondeur de la tête fraisée sont conçues pour être insérées dans le trou (6) pour boulon noyé par l'ouverture (20) de mesure.

10. Procédé de mesure de la forme d'un trou pour mesurer la forme d'un trou (6) pour un boulon noyé ménagé dans un élément (3) cible, qui comprend un matériau composite,
dans lequel le trou (6) pour un boulon noyé a :

une partie (7) de tête fraisée, qui communique avec une ouverture ménagée dans une surface (4) principale de l'élément (3) cible et qui a une forme dans laquelle un diamètre diminue au fur et à mesure qu'une profondeur à partir de la surface (4) principale augmente et

une partie (8) constante, qui communique à une extrémité avec une partie de fond de la partie (7) de tête fraisée et qui communique à l'autre extrémité avec une ouverture ménagée dans une surface (5) arrière de l'élément (3) cible et qui a un diamètre constant,

dans lequel le dispositif de mesure de la forme d'un trou comprend :

mesurer un diamètre de la partie (8) constante en insérant un calibre (39) de mesure du diamètre d'un trou prévu à une pointe d'une tige (32) de mesure du diamètre d'un trou dans la partie (8) constante, le calibre (39) de mesure du diamètre d'un trou comprenant une paire de bornes (41) de mesure conçues pour être poussées vers l'intérieur, lorsque la tige (32) de mesure est insérée dans la partie (8) constante, et pour déplacer une tige (38) conçue pour être déplacée dans une première direction perpendiculaire à la surface principale de l'élément cible en résultat suivant le diamètre de la partie (8) constante et dans lequel le diamètre de la partie (8) constante est calculé sur la base du montant du déplacement de la tige (38) et

mesurer une profondeur de tête fraisée de la partie (7) de tête fraisée en insérant une partie (43) de pointe de la tige (31) de mesure de la profondeur de la tête fraisée ayant un diamètre qui est le diamètre de référence, la tige (31) de mesure de la profondeur de la tête étant prévue de manière à être coaxiale avec la tige (32) de mesure du diamètre d'un trou, dans la partie (7) de la tête fraisée.

11. Procédé de mesure de la forme d'un trou suivant la revendication 10, dans lequel la tige (32) de mesure du diamètre d'un trou est configurée de manière à être déplacée suivant un diamètre du trou (6) pour un boulon noyé dans une direction à l'instant de l'insertion dans le trou (6) pour un boulon noyé et
la mesure du diamètre de la partie (8) constante comprend :

insérer la pointe de la tige (32) de mesure du diamètre d'un trou dans la partie (8) constante et mesurer le diamètre de la partie (8) constante dans une deuxième direction avant de mesurer une profondeur de la tête fraisée,

faire tourner la tige (32) de mesure du diamètre d'un trou après avoir mesuré la profondeur de la tête fraisée et

mesurer le diamètre de la partie (8) constante dans une troisième direction par la tige (32) de mesure du diamètre d'un trou après avoir fait tourner la tige (32) de mesure du diamètre d'un trou.

12. Procédé de mesure de la forme d'un trou suivant la revendication 11, dans lequel la rotation de la tige (32) de mesure du diamètre d'un trou comprend faire tourner la tige (32) de mesure du diamètre d'un trou de 90°.

13. Procédé de mesure de la forme d'un trou suivant la revendication 10 ou 11, comprenant, en outre :

préparer un calibre (45) maître pourvu d'un trou (46) de référence ayant une profondeur de tête fraisée connue et un diamètre (b) de trou connu à l'avance, avant de mesurer le diamètre de la partie (8) constante et

mesurer la profondeur de la tête fraisée et le diamètre du trou (46) de référence en utilisant la tige (32) de mesure du diamètre d'un trou et la tige (31) de mesure de la profondeur de la tête fraisée et effectuer une correction sur la base des résultats mesurés, avant de mesurer le diamètre de la partie (8) constante.

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